Wave Spring for a Spinal Implant
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United States of America Patent
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Issued Date -
Sep 10, 2015
app pub date -
May 21, 2015
filing date -
Jun 30, 2011
priority date (Note) -
Abandoned
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Abstract
A spinal implant includes a coiled wave spring configured to surround a nucleus. The wave spring is formed with at least one wire having a sinusoidal shape and made of a shape memory material. The shape memory material is tailored to achieve a stress-induced martensitic transformation when a critical stress is exceeded. The implant may further include an artificial nucleus configured to simulate a disc nucleus. Methods of forming and implanting the spinal implant are also disclosed.
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